Mazda 6 Service Manual: No.4 air intake mode does not change

Mazda 6 Service Manual / Heater and air conditioner systems / Troubleshooting / No.4 air intake mode does not change

When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while performing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.

Diagnostic procedure

No.3 amount of air blown from vents does not change

Manual Air Conditioner Diagnostic procedure ...

No.5 no temperature control with climate control unit

Diagnostic procedure ...

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Mazda 6 Service Manual: Foreword
When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to following flowchart. - If a DTC exists, diagnose the applicable DTC inspection. (See DTC TABLE.) - ...